Patents by Inventor Tatsuaki Kamiya

Tatsuaki Kamiya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Safety apparatus and fault detection method
    Patent number: 8803654
    Abstract: A safety apparatus includes: a latch circuit which retains an inconsistent state record when input signals from a plurality of sensors are in an inconsistent state, and frees the inconsistent state record when the input signals from the plurality of sensors are all in an OFF state; and an AND circuit which performs a sensor fault determination at timing when the input signals from the plurality of sensors are all in an ON state, the sensor fault determination including determining that at least one of the plurality of sensors is failed if the latch circuit retains the inconsistent state record and determining that none of the plurality of the sensors is failed if the latch circuit retains no inconsistent state record.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: August 12, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Haruyuki Kurachi, Tatsuaki Kamiya
  • SAFETY APPARATUS AND FAULT DETECTION METHODS
    Publication number: 20130021135
    Abstract: A safety apparatus includes: a latch circuit which retains an inconsistent state record when input signals from a plurality of sensors are in an inconsistent state, and frees the inconsistent state record when the input signals from the plurality of sensors are all in an OFF state; and an AND circuit which performs a sensor fault determination at timing when the input signals from the plurality of sensors are all in an ON state, the sensor fault determination including determining that at least one of the plurality of sensors is failed if the latch circuit retains the inconsistent state record and determining that none of the plurality of the sensors is failed if the latch circuit retains no inconsistent state record.
    Type: Application
    Filed: April 26, 2010
    Publication date: January 24, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Haruyuki Kurachi, Tatsuaki Kamiya